I am building a 12’x14’ shed on a gravel pad I built. I am going to order the wood to start the shed floor this week and had a few questions. First my plan is to do 2x6 pressure treated(ground rated) pine wood for the floor joist (16inches on center) spanning the 12ft dimension. The 2 x 6s will rest on one 4x4x14’ in the front, one in the middle of the span and one at the back of the shed. The floor will then consist of pressure treated plywood on top.
My concerns are as follows: Joist hangers(although used for vertical loads and my vertical load is supported by the 4x4s ) may help prevent movement of the boards if warping over time correct? The bottom of the joist hanger will cause the supporting joist 2x6s to be slightly higher than the front and back 2x6 as the bottom part of the joist hanger has some dimension to it.
Due to the issue above would I be better off using angle framing brackets on each side of the the joist to prevent sideways movement and they do not have a bottom dimension as they are only on sides.
Or do I all together forget brackets and use a toenail or a end nail (which is stronger/better in this case). Or use screws ?